Update Linux to v5.10.109

Sourced from [1]

[1] https://cdn.kernel.org/pub/linux/kernel/v5.x/linux-5.10.109.tar.xz

Change-Id: I19bca9fc6762d4e63bcf3e4cba88bbe560d9c76c
Signed-off-by: Olivier Deprez <olivier.deprez@arm.com>
diff --git a/net/8021q/vlan.c b/net/8021q/vlan.c
index 3f47abf..d12c9a8 100644
--- a/net/8021q/vlan.c
+++ b/net/8021q/vlan.c
@@ -51,12 +51,16 @@ static int vlan_group_prealloc_vid(struct vlan_group *vg,
 				   __be16 vlan_proto, u16 vlan_id)
 {
 	struct net_device **array;
-	unsigned int pidx, vidx;
+	unsigned int vidx;
 	unsigned int size;
+	int pidx;
 
 	ASSERT_RTNL();
 
 	pidx  = vlan_proto_idx(vlan_proto);
+	if (pidx < 0)
+		return -EINVAL;
+
 	vidx  = vlan_id / VLAN_GROUP_ARRAY_PART_LEN;
 	array = vg->vlan_devices_arrays[pidx][vidx];
 	if (array != NULL)
@@ -116,9 +120,6 @@ void unregister_vlan_dev(struct net_device *dev, struct list_head *head)
 	}
 
 	vlan_vid_del(real_dev, vlan->vlan_proto, vlan_id);
-
-	/* Get rid of the vlan's reference to real_dev */
-	dev_put(real_dev);
 }
 
 int vlan_check_real_dev(struct net_device *real_dev,
@@ -180,9 +181,6 @@ int register_vlan_dev(struct net_device *dev, struct netlink_ext_ack *extack)
 	if (err)
 		goto out_unregister_netdev;
 
-	/* Account for reference in struct vlan_dev_priv */
-	dev_hold(real_dev);
-
 	vlan_stacked_transfer_operstate(real_dev, dev, vlan);
 	linkwatch_fire_event(dev); /* _MUST_ call rfc2863_policy() */